Home / 26,928.57-40,392.87-12,885.30

Finding the Fourth Proportional to 26,928.57, 40,392.87 and 12,885.30

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Solution

The fourth proportional to 26,928.57, 40,392.87 and 12,885.30 is: 19,327.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,928.57 : 40,392.87 = 12,885.30 : x
  2. Step 2: Convert to fraction form
    26,928.57/40,392.87 = 12,885.30/x
  3. Step 3: Cross multiply
    26,928.57x = 40,392.87 × 12,885.30
  4. Step 4: Simplify right side
    26,928.57x = 520,474,247.81
  5. Step 5: Solve for x
    x = 520,474,247.81/26,928.57
  6. Step 6: Final answer
    x = 19,327.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.